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#!/bin/rc
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# dontkill regexp - mark invoker's processes with names matching regexp
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#	as not killable when the kernel runs out of memory
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if (! ~ $#* 1) {
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	echo $0 regexp >[1=2]
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	exit usage
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}
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cd /proc
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# see /sys/src/9/port/proc.c:/^killbig
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pids=`{psu | awk '$NF ~ /'$1'/ {print $2}'}
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~ $#pids 0 || chmod -w $pids^/ctl >[2]/dev/null